Double-throw switch



Patented June 28, '1.927.

UNITED .STATES VMTENT OFFICE.

MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO HART 6c HEGEMAN MANUFACTURING COMPANYfOF HARTFORD, CONNECTICUT, CORPORATION OF coNNEc'rrcUT.

DOUBLE-THROW, swrrc'ln.

One object of my invention is to lconstruct a double pole, double throw electric switch, in which a reciprocating carrier is'operated by a Switch lever or push buttons.

A further object of the invention is to construct the switch so that it can be placed in a wall in the ysame maner as the ordinary Hush wall switch.

In the accompanying drawings:

Fig. 1 is a side view of my'improved double pole, double throw switc Fig42 is a face View; l

Fig-3 is a vertical sectional view on the line 3-3, Fig. 2, showing the switch blades in one position;

Fig. 4 is a view, similar to Fig. 3, showi ing the switch blades in the other position;

Fig. 5 is a vertical sectional view on the line 5 5, Fig. 2; l

Fig. 6 is a sectional View on the line 6 6,

Figi);

ig. 7 is a .detached perspective vlcw of the carrier and its blades;

Fig. is a perspective 'view of the snap mechanlsm.;

Fig. 9 is a perspective view of the handle;

Figs. 10, 11 and 12 are detached perspective views of the terminals on one Side of the switch; and

Fig. 13 is a view illustrating a modification. f

The base 1 of the switch is made of porcelain, or other suitable non-conducting material, and is' recessed to accommodate the movable elements of the switch. Secured to one end -of the base are terminals 2, 2, Each terminal is secured to the base by two screws 3, 3 and has a binding screw 4. Vby which a wirefcan be attached'thereto. The contact portion 5 is bent at right anglesto the base of the terminal, as shown in Fig. 11.

Located within the recess of the base are two terminals 6, 6, which are made as illustrated in Figs. 3 and 12. Each terminal has ya base through which extends a screw 7 that acts as a means of attachment to the base and also as a binding screw by which a wire can be attached to the terminal. The contact'portions 8 of the terminals 6, 6a are located at oriabout forty-live degrees from the contact portions 5' ofthe terminals 2, 2, respective y.

At the opposite end of the base are two double terminals 9, 9, which are made as shown in Fig. 10. Each terminal has two contact portions 10 and 11. The base 12 ot each terminal is secured to the base l of the switch by screws 13. Each terminal has ra "binding screw 14 by which a wire-can be`attached thereto. Mounted on av plate 15, which is secured to the base 1, isa switch lever 16. This lever is mounted on a pivot 17, Fig. '9, and has a slotted extension 18, which engages a slotted head 19 ot a slide 2O that forms a part of a snap structure 21, Fig. 8. The slide 20 is forked and the forked portions extend through a slot in a plate 22. Between the plate 22 and a curved `plate 23 is a spring 24, which is compressed when the switch lever is vmoved from one position vto the other. Stops 25 on the switch lever 16 limit its move-ment in either direction.

The blade carrier 26, shown indetail in Fig. 7, is .pivotally mounted on arms 27, which extend through slots 28 in the carrier as shown in` Fig. 7. When the lever 16 is moved rom oneposition to the other, the carrier is shifted from the position shown in Fig. 3 to that shown in Fig. 4. There arey two sets of blades on the carrier.` The blades 29, 29 are made double, las illustrated in Fig. 7, and are arranged -to pass on each side of the Contact portions of the termi nals 2, 2, aid 6, 6*. The blades 30, 30 are also mai'e double and enga e either the Acontact portions 10 or 11 of t e terminals 9, 9, respectively.

Between the blades 29I and 30, and 29a and 30, respectively, are segmental sections 31 of non-conducting material. These sections are made in pairs, which are spaced apart yand act not only to prevent sparking, but

also as guides for the blades when they are shifted from one terminal to another.

The snap mechanism shown in Fig. 8 is located in the recess 32 of the carrier 26. The plate 22 rests against the base of the recess and the forked portions of the slide 2O extend on each side of the body of the carrier.

By this construction, a double pole, double throw switch can be made in which the switch lever is oscillated in the same Inanner as the ordinary wall switch. The switch can also be made as a flush wall switch.

' lheinvention is especially adapted as a switch for radio Work where the battery 4charger is used Ylor storing the battery. ln

this Case, the terminals 9, 9 are connected to the storage battery and the terminals 6, 6a are connected to the battery charger. The terminals 2, 2 are connected to the receiving set of the radio apparatus.

lVhile this switch is particularly adapted for use in the manner hereinbetore described, it Will be understood that it can be used or other purposes without departing fromA ducting material; a plate extending across the recess of the base; a switch lever pivotally mounted on the plate; a carrier 1ocated within the recess and pivotally mountedon the plate, said carrier having two sets of blades; sections of non-conducting material mounted on the carrier between the sets ot blades; snap mechanism connecting;r the switch lever with the carrier.; a pair ot double terminals located at one end of the case; a single pair of terminals located at the opposite end of the base; and a single pair ot' intermediate terminals located in the recess voit the base between the double and single terminals and so positioned that,'when the carrier is in one position, the blades will engage one of the contacting portions of the double terminal, and one of the single terminals, and, When the carrier is shifted, the blades will engage the other contacting portion of the double terminal andthe other single terminal,

MONROE GUETT. 

